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Unread 08-27-2013, 12:11 PM   #1
04WJny
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Clocking a NP231

Im looking to clock my np231 on my 87 YJ to gain some clearance for my belly up. Will i have any issues with fitting the clocking ring, or problems with lubrication after its done? Didnt know if theres any differences with np231j t cases because i have an earlier one with a mechanical speedometer. I plan on clocking it up until its the completely parallel with the ground or where it would sit completely flush to the belly up skid.

This is the one im looking at:

http://www.cutthroat4x4.com/catalog/...roducts_id=125

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Unread 08-27-2013, 12:55 PM   #2
Norcal_chris
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Shouldnt have issues at all. But at least when I had my teralow case in stock location it wouldnt have made much difference to clock the case. The trans is almost as low. I just raised the trans up to flat with frame and the tcase cleared.
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Unread 08-27-2013, 03:43 PM   #3
rambo3489
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Na you should be fine with the concerns you have. The cases are all the same. The Cherokee's have a different bolt pattern and are clocked down more. And the input shaft changed in 95 I believe. Went to more splines. Other than that they are the same

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Unread 08-27-2013, 05:43 PM   #4
booboowv77
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Quote:
Originally Posted by 04WJny View Post
Im looking to clock my np231 on my 87 YJ to gain some clearance for my belly up. Will i have any issues with fitting the clocking ring, or problems with lubrication after its done? Didnt know if theres any differences with np231j t cases because i have an earlier one with a mechanical speedometer. I plan on clocking it up until its the completely parallel with the ground or where it would sit completely flush to the belly up skid.

This is the one im looking at:

http://www.cutthroat4x4.com/catalog/...roducts_id=125
I am about 15 miles from cut throat, when I was doing my 8.8 I contacted them 5 times all with no response. If you can find that ring somewhere else I would defiantly recommended it.
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Unread 08-28-2013, 08:14 AM   #5
04WJny
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Quote:
Originally Posted by booboowv77 View Post
I am about 15 miles from cut throat, when I was doing my 8.8 I contacted them 5 times all with no response. If you can find that ring somewhere else I would defiantly recommended it.
Thanks for the heads up

The only other one i found for $30 more shipped to my door was from Canada. Ill give them a call sometime today to see if they have any in stock. I got the standard email with contact info when i signed up for their website to calculate shipping, ill call that in an hour or so.

Hopefully there not ignoring calls on purpose
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In the process of putting in an 8.8, d30, 4.10's, SOA, and a homemade belly up skid
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Unread 08-28-2013, 12:45 PM   #6
Norcal_chris
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Check the vendor section on pirate. There are a few that sell em for cheap.
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Unread 08-28-2013, 03:13 PM   #7
StanF
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I picked up a clocking ring from Cutthroat via eBay. Shipped fast; product was good. There weren't any instructions included, but they aren't really necessary.
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Unread 08-28-2013, 04:44 PM   #8
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You may have to modify your floor pan.
Make sure you goop up the recessed head bolts going from the ring to the tcase with sealant (I use ultra black)- I had to r&r my clocked tcase twice (leaks) before I realized it was leaking at the recessed bolts. bone dry now.

i'm running a NP241 (clocked 16 degrees up) on a Mopar v8/trans though but i'm sure it's similar.
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Unread 08-28-2013, 11:04 PM   #9
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Quote:
Originally Posted by EYJ View Post
You may have to modify your floor pan.
Make sure you goop up the recessed head bolts going from the ring to the tcase with sealant (I use ultra black)- I had to r&r my clocked tcase twice (leaks) before I realized it was leaking at the recessed bolts. bone dry now.

i'm running a NP241 (clocked 16 degrees up) on a Mopar v8/trans though but i'm sure it's similar.
Is the leaking thing specific to your tranny / tcase combo? I clocked mine (redrilled the flange) and haven't seen a leak. There's a seal on the back of the ax15 (output shaft) to keep the oil in there. And the 231 is sealed on the front.

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Unread 08-29-2013, 08:02 AM   #10
04WJny
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Quote:
Originally Posted by EYJ View Post
You may have to modify your floor pan.
Make sure you goop up the recessed head bolts going from the ring to the tcase with sealant (I use ultra black)- I had to r&r my clocked tcase twice (leaks) before I realized it was leaking at the recessed bolts. bone dry now.

i'm running a NP241 (clocked 16 degrees up) on a Mopar v8/trans though but i'm sure it's similar.
I have a 1" BL so i dont ill have a problem. As for the sealing thanks for the heads up ill make sure my seals are good on the t case and tranny to make sure i wont have any leaks
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Cragar Soft 8's, and a few other things
In the process of putting in an 8.8, d30, 4.10's, SOA, and a homemade belly up skid
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Unread 08-29-2013, 08:10 AM   #11
04WJny
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Quote:
Originally Posted by Norcal_chris View Post
Check the vendor section on pirate. There are a few that sell em for cheap.
Good Call i found one from Fourwheelsupply.net for $45 shipped. Sent them an email and got a response right back. It should be processed by lunchtime
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Cragar Soft 8's, and a few other things
In the process of putting in an 8.8, d30, 4.10's, SOA, and a homemade belly up skid
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Unread 08-29-2013, 12:39 PM   #12
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When I had reclocked my t-case I only drilled new holes as that there was plenty of room to permit the reclocking, plus I had used a bead of RTV Black on the mounting flange. Of course I did drill out the new holes with a drill bit that was 1/64" larger, which happened to be the same size as the existing holes.
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